A Novel Wideband Circularly Polarized Printed Antenna

A circularly polarized printed antenna, capable of operating over an octave bandwidth is designed and fabricated. The design is evolved from classical printed monopole/dipole geometry. It employs a microstrip-line fed rectangular radiator, printed on the top of a substrate. The ground, extended as another rectangular radiator is printed on the bottom of the substrate. Both the top and bottom radiators are asymmetrically configured in such a way that the surface currents on them are orthogonal so as to produce left-hand circular polarization (LHCP). The antenna configuration is simulated using a commercially available EM solver. The simulated and measured results closely match within the operating bandwidth. The measured results show a -10-dB return loss bandwidth of 800 MHz to 4.15 GHz and a 3-dB axial ratio bandwidth of 1.5 GHz to 3.4 GHz. For the designed center frequency of 2.45 GHz, these correspond to 136% and 77% respectively. A parametric study of the design is carried out and the mechanism of circular polarization is described.

[1]  Won-Sang Yoon,et al.  Circularly polarised printed crossed dipole antennas with broadband axial ratio , 2008 .

[2]  Song Shi,et al.  Circularly polarized rectangularly bent slot antennas backed by a rectangular cavity , 2001 .

[3]  Zhi Ning Chen,et al.  Small Printed Ultrawideband Antenna With Reduced Ground Plane Effect , 2007, IEEE Transactions on Antennas and Propagation.

[4]  J. Row,et al.  The design of a squarer-ring slot antenna for circular polarization , 2005, IEEE Transactions on Antennas and Propagation.

[5]  K. Hirasawa,et al.  Two rectangular loops fed in series for broadband circular polarization and impedance matching , 2004, IEEE Transactions on Antennas and Propagation.

[6]  A. Sambell,et al.  Low-Cost Broadband Circularly Polarized Printed Antennas and Array , 2007, IEEE Antennas and Propagation Magazine.

[7]  C. Luxey,et al.  Dual-band circularly polarized microstrip antenna for satellite applications , 2005, IEEE Antennas and Wireless Propagation Letters.

[8]  C.-Y. Huang,et al.  Planar elliptical antenna for ultra-wideband communications , 2005 .

[9]  A. Andrenko.  Novel circularly polarized loop coupled dipole antenna , 2006, 2006 First European Conference on Antennas and Propagation.

[10]  M. Bialkowski,et al.  Design of Ultrawideband Planar Monopole Antennas of Circular and Elliptical Shape , 2008, IEEE Transactions on Antennas and Propagation.

[11]  L. Shafai,et al.  A wider band microstrip antenna for circular polarization , 1988 .

[12]  M. Sreenivasan,et al.  A Simple Ultrawideband Planar Rectangular Printed Antenna With Band Dispensation , 2010, IEEE Transactions on Antennas and Propagation.

[13]  H. L. Su,et al.  Broadband circularly polarised crosspatch- loaded square slot antenna , 2007 .

[14]  Sang-Min Han,et al.  Crossed dipole antenna with switchable circular polarisation sense , 2009 .

[15]  Jin-Ping Zhang,et al.  Microstrip-Fed Semi-Elliptical Dipole Antennas for Ultrawideband Communications , 2008, IEEE Transactions on Antennas and Propagation.

[16]  M. John,et al.  A Novel GPS Patch Antenna on a Fractal Hi-Impedance Surface Substrate , 2006, IEEE Antennas and Wireless Propagation Letters.

[17]  K. G. Thomas,et al.  Wideband planar printed antenna with end-fire radiation pattern , 2011 .

[18]  Kin‐Lu Wong,et al.  Low-cost broadband circularly polarized patch antenna , 2003 .

[19]  Jia-Yi Sze,et al.  Circularly Polarized Square Slot Antenna With a Pair of Inverted-L Grounded Strips , 2008, IEEE Antennas and Wireless Propagation Letters.

[20]  Xianming Qing,et al.  Broadband single-fed single-patch circularly polarized antenna for UHF RFID applications , 2008, 2008 IEEE Antennas and Propagation Society International Symposium.

[21]  Max J. Ammann,et al.  Reduction of ground-plane-dependent effects on microstrip-fed printed rectangular monopoles , 2008 .

[22]  C. C. Chiau,et al.  Study of a printed circular disc monopole antenna for UWB systems , 2005, IEEE Transactions on Antennas and Propagation.

[23]  Max J. Ammann,et al.  Comparison of Several Novel Annular-Ring Microstrip Patch Antennas for Circular Polarization , 2006 .

[24]  Y. Rahmat-Samii,et al.  A low profile single dipole antenna radiating circularly polarized waves , 2005, IEEE Transactions on Antennas and Propagation.

[25]  Vincent F. Fusco,et al.  Understanding and measuring circular polarization , 2003, IEEE Trans. Educ..

[26]  Manos M. Tentzeris,et al.  Wideband probe-fed circularly polarised circular loop antenna , 2005 .